van depoele



(No Model.) 7 2 SheetsSheet 1.

G. J. VAN DEPOELE.

CURRENT REGULATOR FOR ELECTRIC MOTORS.

No. 291,650. Patented Jan. 8, 1884.

(No Model.) 2 Sheets-Sheet 2.

0. J. VAN DEPOELE.

CURRENT REGULATOR FOR ELECTRIC MOTORS. No. 291,650. Patented Jan. 8, 1884.

Wizw/esses'xf Iii/67117 071 UNITED States CHARLES .l. VAX DEPOELE, OF CHICAGO, ILLIYOIS.

CURRENT-REGULATOR FOR ELECTREC lt-lQTO.

SPECIFICATION forming part of Letters Patent No. 291,650, dated January 8, 188%,

Application filed May 10, 1883. (X0 model.)

1'0 all UFLONZ/ 2'25 71m concern.-

Be it known that I, CHARLES J. Yin: Dn- POELE, of Chicago, in the county of Cook and State of Illinois, have invented new and useful Improvements in Curreut ltegulators for Electro-motors; and I do hereby declare that the following is a full, clear, and eXact description thereof, reference being had to the accompanying drawings, which form a part of this specification.

This invention relates to certain new and useful improvements in the construction of electric motors and the invention consists in the peculiar construction ol'the diiierent parts, the mode of winding, and distributing the current in the ClGC ClOIlIZLgIlQtS and armature of said motor, as more fully hereinafter described.

The object of this improvement is to secure a perfect economical electric motor capable of exerting its maximu n1 force without materially lessening the speed of the motor or of doing its minimum duty without materially increasing said speed, and at the same time to take only as much current from the prime generator as is used up in said motor, and proportionate to the amount of work exerted by the same.

Figure l is a diagram ofconnections through the whole system, with all the field-magnet coils in circuit. Fig. 2 is a vertical section showing the disposition of the iieldqnagnets with regard to the core of the armature. Fig. 3 is a front perspective elevation of my im proved device. Fig. 4 is a detail plan view of the governor and connections. Fig. 5 is a sectional elevation on line 5 5 of Fig. 3. Fig. 6 is a detail view on line 6 6 of Fig. 1, showing the commutator, its brushes and holders therefor, and the springs for pressing the brushes against the commutator, and also the adjacent parts of the machine.

Similar letters denote like parts.

In the accompanying drawings, which form a part of this specification, A is the armature. B and B are the polar extensions of the fieldmagnets ill. C isthe commutator. C and G" are the brushes. N is the negative and l? the positive terminal of the circuits in the machine. l? P 1? show the positive terminals of the coils M, and XX N show the negative terminals. As will be seen, the outside terminals l of all the coils BI are connected to one common conductor, P, and all the inside 1 terminals are connecter to one common conductor, X, when the bar I? is in contact with all the terminals n n",

In Fig. 1 the current enters by the pole l? to the brush 0, into the armature by corresponding sections of the commutator C, and out of the armature by the opposite section of the commutator to the brush 0 and terminal N. B and B are the north and south pole pieces or polar extensions of field-magnets M. E are the ends of the field-magnets, and E and E are the top and bottom of the machine, all of castiron. The brushes C and Cand their holders are carried by the circle H, and are movable around the commutator C by means of the handle H, from which they are suitably insulated. Said brushes are in electrical conthrough the contact springs or brushes C and C", that are suitably secured to the handle H, and are permanently connected to the com nnitator-brushes C and 0''. By these means the current is taken from the fixed contacts K and L, so as to enable the operator to stop and start the motor or reverse the motion of the same at will. The brushes and their holders are placed diametrically opposite one another around the commutator, with the brushes in a straight line to the center of the commutator. The holders in which the brushes are placed come very close to the commutator, and the brushes are pressed upon l the same by suitable springs, It. By this arrangement I am enabled to reverse the motion of the motor by moving the brushes to the right or left without changing their inclination with respect to the axis of rotation of the commutator as is necessary where the brushes are placed in the usual way. G is a centrifugal governor driven by a belt, passing over a pulley, g, and around pulleys on the armature-shaft and the shalt of the governor, and is driven by the same and regulates the speed of the motor by raising or lowering the bar N by means of a bar, 71, extending from the movable sleeve of the governonand thus placing a larger or smaller number of electromagnet coils M in circuit,and thereby not only vary ing the number of magnet-poles acting upon the armature, but also, by varying the resistcurrent passing through the armature. The

nection with the fixed semicircles 1i and L,

ance of the circuit, ctnitrolling the amount of Lin current in the armature can be reversed by l in the motors and also their armatures are moving the hand-lever H either to the right or left, thus placing the brushes 0 and G in contact with either one or the other of the semicircles K or L. This reverses the motion without reversing the current in the field-magnet coils.

The circuit in the machine is follows: The current enters at I and passes by suitable connection over to the semicircle K, where it can be made to enter either the lower or the top brush of the armature. By turning the handle H to the right or left from 1 the currentpasses down to the terminals P, as shown in Fig. 1. By a suitable conductor, P, the current is sent to the terminals I 011 the right side of the machine. The current circulates through all the electro-magnet coils and comes out at the terminals N, which are led to the insulated posts n, (in Fig. 3,) placed upon a bar, \V, made of wood or other suitable insulating material. From these posts the current passes by suitable co11tacts,n,to the bars N, hinged to the standards S S. Theupper part of the standard S is insulated from the lower part of the standard, as shown,while the standard S is the negative pole of the machine, the current leaving at N Fig. 3, and the circuit through the armature is completed by the conductor a, which is in communication with semicircle L. F is a face-plate of wood or other suitable non-conducting material, carrying the plates K and L and the circle II. On establishing the circuit with some proper source of electricity the current flows in multiple are through the armature, and each independent electro or field magnet M, said armature and field magnets offering each .a similar resistance thereto, and instantly the motor begins to revolve. Soon the armature and pulley and governor attain a speed which would go on i11- creasin-g were it not for the governor G lifting up the bars N N, which are hinged at S S, breaking contact with one or several of the contacts a, Fi g. 3, until the speed of the armature corresponds to that for which the governor has been set.

-When the motor has only a small amount of work to do, only one or two ofthe magnet-coils will be put in circuit, while the others will be cut out of circuit by the governor; but the moment the motor has a large amount of work to do the governor will slowdown its speed and bring the bar down upon the contacts, and in so doing allow a larger or smaller number of electro-magnets to be put in action, until the speed of the armature again corresponds with the action of the governor. Any alteration in the speed of the motor will alter the number ofcoils or magnets in or out of circuit, and so regulate the speed and power of the motor.

This motor is specially designed to be used with a large number of similar motors in mul tiple are from one generator or source of electricity. The potential of the generator is kept constant, and all the different electro-magnets wound with conductors of high resistance, the resistance in each individual field-magnet coil and in the coils of each armature being in all cases exactly the same, so that by keeping an even potential in the prime generator each .circuit receives exactly the same amount of current, and so dividesfitself perfectly over any number of such circuits.

The motor can be made to run either back or forward without passing any current through the field-magnets by simply passing the current through the armature; but in the latter case the armature will revolve in the opposite direction from what it does when the field-circuits are closed, so that in case it is necessary to stop the motor it can be done by simply cut ting off the current from thefield-magnets, when the armature will tend to rotate in the opposite direction. lVhen it has been brought to a standstill, it can be so kept by cutting off the current altogether by placing the handle and brushes in a verti fill position.

hat I claim as new is 1. In an electric motor, the field-magnets composed of a number of independent electromagnets not magnetically connected together at their poles or active ends, while their opposite ends are all connected magnetically to one common cast-iron plate, a similar system of electro-magnets being placed at each side of the revolving armature, the active ends of the electro-magnets facing each other, their opposite end plates secured to a cast-iron base and top, substantially as described.

2. In an electric motor, the combination, with independent and separate field-circuits, of a centrifugal governor adapted to bring a larger or smaller number of said field-circuits in operation, so as to regulate the speed and power of the motor, as described and set forth.

In an electric motor, a number of independent field electromagnets, in combination with an armature, each field electro-magnet coil of the motor having the same resistance as the armature-coils, substantially as described.

4. An electric motor having a number of electro-magnet cores provided with pole-pieces facing each other on opposite sides of an armature-core, said armature and field-magnets having equally-resistant circuits around each of their cores, in combination with a source of electricity in which a constant potential is maintained to furnish current for said motor or motors, as described and set forth.

In an electric motor, and in combination with its revolving armature, a centrifugal governor rcceiving motion from said armature, and proper means'connected to said governor to allow a larger or smaller number of electromagnets to act upon the armature of the motor to regulate the power and speed of the same, substantially as described.

(3. In an electric motor, a centrifugal governor driven by said motor, in combination with the bars N N and contacts a 12 -12, &c., actuated by the centrifugal power of said gov- IOC ITO

ernor, in orderto regulate the power and speed of the motor, by allowing a larger or smaller amount of current to act upon the revolving armature of the motor, substantially as described.

'7. In an electric motor, a faceplate of wood or other suitable non-conducting substance or material provided with two semicircular plates ofcondu cting material connected with the poles P and N of a source of electricity, in combination with an oscillating hand-lever carrying brush-holders and brushes 0 and 0, bearing upon the opposite side of a commutator so arranged aud constructed that by the motion or oscillation of the lever from right to left, or vice versa, the brushes bearing upon said conimutator can be made to be in contact either with the positive or negative poles of the source of electricity, and so to be able to re verse the motion of said motor or to stop the same when the brushes are placed between the opposite semicircular plates, as described, and for the purpose set forth.

In an electric motor, and in combination with the commutator of the same, two brushes placed diametrically opposite one another and in a straight line through the axis of rotation placed in a suitable holder coming very near the periphery of the revolving commutator, so as to be able to reverse the motion of the armature by changing said brushes from right to left without altering their inclination with respect to the axis of rotation of the comniutator, substantially as described.

9. In an electric motor, the brush-holders (1 and C placed diametrically opposite one an other, and suitably secured to and insulated from the hand-lever H, and provided with contacts in the back of said hand-lever, so as to be able to place the opposite coils of the armature in circuit with the source of electricity necessary to run the motor by oscillating the handle H, so as to come in contact with the plates K and L.

CHARLES J. VAX DEPOELE.

Witnesses:

THEO. P. Bunny, Xommx T. Glissnr'rn. 

